Issue
EPL
Volume 84, Number 1, October 2008
Article Number 11001
Number of page(s) 6
Section The Physics of Elementary Particles and Fields
DOI http://dx.doi.org/10.1209/0295-5075/84/11001
Published online 17 September 2008
EPL, 84 (2008) 11001
DOI: 10.1209/0295-5075/84/11001

Unparticle physics in top pair signals at the LHC and ILC

A. T. Alan1 and N. K. Pak2

1   Department of Physics, Abant Izzet Baysal University - 14280, Bolu, Turkey
2   Department of Physics, Middle East Technical University - 06531 Ankara, Turkey

alan_a@ibu.edu.tr
pak@metu.edu.tr

received 14 February 2008; accepted in final form 11 August 2008; published October 2008
published online 17 September 2008

Abstract
We study the effects of unparticle physics in the pair productions of top quarks at the LHC and ILC. By considering vector, tensor and scalar unparticle operators, as appropriate, we compute the total cross-sections for pair production processes depending on the scale dimension $d_{{\cal U}} $. We find that the existence of unparticles would lead to measurable enhancements on the SM predictions at the LHC. In the case of ILC this may become two orders of magnitude larger than that of SM, for smaller values of $d_{{\cal U}} $, a very striking signal for unparticles.

PACS
14.80.-j - Other particles (including hypothetical).
12.90.+b - Miscellaneous theoretical ideas and models.
12.38.Qk - Experimental tests.

© EPLA 2008